Definition of "window" in English

noun

1. An opening, usually covered by one or more panes of clear glass, to allow light and air from outside to enter a building or vehicle.

   • She opened the window to let some air in.

2. An opening, usually covered by glass, in a shop which allows people to view the shop and its products from outside; a shop window.

3. (architecture) The shutter, casement, sash with its fittings, or other framework, which closes a window opening.

4. (figurative) A period of time when something is available or possible; a limited opportunity.

   • launch window
   • window of opportunity
   • You have a two-hour window of clear weather to finish working on the lawn.

5. (figurative) Something that allows one to see through or into something

   • His journal provides a rare window into his otherwise obscure life.

6. A restricted range.

7. (graphical user interface) A rectangular area on a computer terminal or screen containing some kind of user interface, displaying output and allowing input, often for a single task in a multitasking system.

8. A figure formed of lines crossing each other.

9. (medicine) The time between first infection and detectability.

10. (military, historical, uncountable) Synonym of chaff (“strips of material intended to confuse radar”)

11. (signal processing) A function multiplied with a signal to reduce spectral leakage when performing a Fourier transform.

verb

1. (transitive) To furnish with windows.

2. (transitive) To place at or in a window.

3. (transitive, signal processing) To apply a window function to (a signal).